TIA/EIA-515B000:1986 (R2014)

Object

The object of this Specification is to prescribe preferred
ratings and characteristics for pressurized aerial, buried or
underground fiber optic splice closures; select from EIA-5150i300,
"Generic Specification for Optical Fiber and Cable Splices," the
appropriate quality assessment procedures, tests, and measuring
methods; and to give general performance requirements for this type
splice closure. This Sectional Specification must be used in
conjunction with a fiber splice sectional to specify a complete
optical cable splice. The Specification addresses those
requirements necessary to provide external protection for an
optical fiber splice, but does not cover the properties of a
fiber-to-fiber splice.

Closure Types

This Sectional Specification identifies the characteristics of
pressure-tight fiber optic cable splice closures designed for use
with fiber optic cables in underground, buried, and aerial
telecommunications applications. Moisture access into the cable
closure will generally be excluded by means of a positive gas
pressure system, normally not exceeding 70 kilopascals (10 pounds
per square inch).

Closure Classifications

Splice closures are classified according to the configuration in
which cables may enter the ends of the closure as follows:

Straight Splice Closure: Closures that provide openings for only
one cable to enter each end of the closure.

Branch Splice Closures: Closures that provide openings for two
or more cables to enter one or both ends of the closure.

Butt Splice Closures: Closures that provide openings such that
two or more cables enter one end of the closure and no cable enters
the other end of the closure.